393091780

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{257}}^1\times {\mathrm{2467}}^1$

素因数の和:2764

約数の個数: 48

約数和(自身を含む): 855783936

約数和(自身を除く): 462692156

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 257, 310, 514, 620, 1028, 1285, 2467, 2570, 4934, 5140, 7967, 9868, 12335, 15934, 24670, 31868, 39835, 49340, 76477, 79670, 152954, 159340, 305908, 382385, 634019, 764770, 1268038, 1529540, 2536076, 3170095, 6340190, 12680380, 19654589, 39309178, 78618356, 98272945, 196545890, 393091780]

約数ペア:

[(1, 393091780), (2, 196545890), (4, 98272945), (5, 78618356), (10, 39309178), (20, 19654589), (31, 12680380), (62, 6340190), (124, 3170095), (155, 2536076), (257, 1529540), (310, 1268038), (514, 764770), (620, 634019), (1028, 382385), (1285, 305908), (2467, 159340), (2570, 152954), (4934, 79670), (5140, 76477), (7967, 49340), (9868, 39835), (12335, 31868), (15934, 24670)]